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Agronomy
Special Issues
Advances in Understanding Allelopathic Interactions between Weeds and Crops
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Advances in Understanding Allelopathic Interactions between Weeds and Crops

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Weed Science and Weed Management".

Deadline for manuscript submissions: closed (31 January 2023) | Viewed by 2999

Special Issue Editors

Dr. Changxun Fang

E-Mail Website
Guest Editor
Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
Interests: allelopathic suppression to weed; rice genotypes; rice chilling tolerance
Prof. Dr. Yongjia Zhong

E-Mail Website
Guest Editor
Root Biology Center, Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
Interests: plant-microbe interactions; rhizosphere microbiome; nutrient signaling in crop

Special Issue Information

Dear Colleagues,

Allelopathy refers to the impact of plants upon neighboring plants and/or their associated microflora and/or macrofauna by the production of allelochemicals; often, these allelochemicals typically interfere with plant growth, but they may also result in the stimulation of growth. The field of allelopathy addresses research on the allelochemicals regulating these interactions, as well as the organisms (including microbes and plants) producing these chemicals, or those directly or indirectly affected by these associations. In the paddy field, there are over 100 species of weed. Most of them are competitors that interfere with crop growth and production yield. The coexistence of crops and weed in the field evokes independent reactions between these two species; particularly, the respective exudates from weed and crops arouse allelopathic responses in crops and detoxification in weed. This Special Issue mainly focuses on the allelopathic interactions between weed and crops—including allelochemical molecule–protein interactions and the transcriptome and proteome responses in plants—together with the belowground interactions between these species, and aims to uncover the communication and reaction mechanisms of crop–weed coexistence. Both research articles and reviews are invited for submission to this Special Issue for peer review.

Dr. Changxun Fang
Prof. Dr. Yongjia Zhong
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Agronomy is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • crops
  • weeds
  • allelopathic interaction
  • competitions
  • allelochemicals
  • molecule–protein interaction
  • rhizosphere
  • microbiome
  • root exudates
  • molecular response

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Published Papers (1 paper)

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Research

16 pages, 6963 KiB  
Article
Root Exudates of Fifteen Common Weed Species: Phytochemical Screening and Allelopathic Effects on T. aestivum L.
by Pervin Akter, A. M. Abu Ahmed, Fahmida Khanam Promie and Md. Enamul Haque
Agronomy 2023, 13(2), 381; https://doi.org/10.3390/agronomy13020381 - 28 Jan 2023
Cited by 7 | Viewed by 2537
Abstract
Through allelopathic interactions, plants may either suppress competing species or promote those that may help them better adapt to their environment. The purpose of this research was to determine how the root exudates of 15 common weeds affected the germination of wheat ( [...] Read more.
Through allelopathic interactions, plants may either suppress competing species or promote those that may help them better adapt to their environment. The purpose of this research was to determine how the root exudates of 15 common weeds affected the germination of wheat (Triticum aestivum L.). Every other day, 15 seeds were dispersed over Petri dishes (with filter paper) and pots (with garden soil) and treated with 1 mL and 5 mL of aqueous root exudates, respectively. Distilled water had the highest germination rate at 86.33% and the lowest at 64.00% (p = 0.001) for Commelina benghalensis in the Petri dish containing root exudates. The seed germination percentage of the pot condition was the lowest, at 68.45% (p = 0.004), for Solanum nigrum, while the control was 87.23%. Similarly, the lowest shoot length, 12.01 cm (p = 0.0025) in Mikania micrantha, and the lowest root length of 2.17 cm (p = 0.0048) in Leucas aspera, were recorded, whereas the control was 19.13 cm and 3.46 cm, respectively, in Petri dishes. In addition, the lowest shoot and root growth were 9.72 cm (p = 0.0004) in Mikania micrantha and 4.34 cm (p = 0.0019) in Spilanthes acmella, while the control was at 20.13 cm and 6.42 cm, respectively, for pot culture. Furthermore, in seedlings, biomass studies of treated T. aestivum showed elevated malonaldehyde (MDA) levels in both Petri dishes and pot cultures. However, chlorophyll a and b levels, as well as those of the antioxidant enzymes catalase (CAT) and superoxide dismutase (SOD), are lower than in the control group. Both enzymes were elevated in pot cultures compared to those grown in Petri plates. The dry weight of T. aestivum seedlings cultivated in pots and Petri dishes demonstrated its considerable allelopathic influence. This research found that the root exudates of all the weeds studied could have the capacity to impede wheat seed germination as well as the development of wheat seedlings. These inhibitory effects were higher in Petri dishes than in pot cultures. Full article
(This article belongs to the Special Issue Advances in Understanding Allelopathic Interactions between Weeds and Crops)
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